▎ 摘　　要

NOVELTY - Constructing graphene-based thermal interface material with mutually vertical structure, comprises e.g. (i) placing the graphene oxide solution in the freezing mold, fully mixing with reducing agent, promoting directional organic solvent, performing pre-reduction treatment, controlling the graphene oxide, reducing agent, the mass ratio of the organic solvent is 40-60:100:1, (ii) carrying out heat balance to the mixed solution after pre-reducing, (iii) placing the mixed solution after heat balance in a freezing device for directional freezing, (iv) unfreezing the frozen sample, after completely thawing, heating the sample air condition, converting it into hydrogel, (v) cooling the hydrogel to room temperature for heat balance, placing in the freezing device for secondary directional freezing, reinforcing structure orientation, (vi) completely thawing the secondary frozen sample, heating under the air condition, completely forming the hydrogel. USE - The method is useful for constructing graphene-based thermal interface material with mutually vertical structure. ADVANTAGE - The method solves the problem of local hot spot and heat conduction at the interface, and can be used as heat interface material in heat management field. DETAILED DESCRIPTION - Constructing graphene-based thermal interface material with mutually vertical structure, comprises (i) placing the graphene oxide solution in the freezing mold, fully mixing with reducing agent, promoting directional organic solvent, performing pre-reduction treatment, controlling the graphene oxide, reducing agent, the mass ratio of the organic solvent is 40-60:100:1, (ii) carrying out heat balance to the mixed solution after pre-reducing, (iii) placing the mixed solution after heat balance in a freezing device for directional freezing, (iv) unfreezing the frozen sample, after completely thawing, heating the sample air condition, converting it into hydrogel, (v) cooling the hydrogel to room temperature for heat balance, placing in the freezing device for secondary directional freezing, reinforcing structure orientation, (vi) completely thawing the secondary frozen sample, heating under the air condition, completely forming the hydrogel, (viii) cooling the completely shaped hydrogel to room temperature, placing in refrigerator to freeze to improve the mechanical property of the water condensation, (viii) after thawing the frozen hydrogel, heating under the air condition, further reducing the graphene oxide hydrogel, (ix) cleaning the reduced hydrogel for many times with de-ionized water, removing the internal solution, heating and drying to obtain graphene aerogel with mutually vertical structure, (x) placing the graphene aerogel for 1000-3000 degrees C high temperature processing under the vacuum or inert atmosphere, (xi) applying the upper part with positive pressure, the lower part vacuum vacuum is combined with the high heat-conducting polymer is fully injected into the graphene gas gel, after curing to obtain the graphite alkenyl thermal interface material with mutually vertical structure.